uslcom(4) on OpenBSD
The text 54d7b271dd99, as OpenBSD 5.2, OpenBSD 5.1, OpenBSD 5.0, OpenBSD 4.9, OpenBSD 4.8, OpenBSD 4.7, OpenBSD 4.6, OpenBSD 4.5, OpenBSD 4.4 shipped it.
Silicon Laboratories CP2101/CP2102 based USB serial adapter
The text 54d7b271dd99, as OpenBSD 5.2, OpenBSD 5.1, OpenBSD 5.0, OpenBSD 4.9, OpenBSD 4.8, OpenBSD 4.7, OpenBSD 4.6, OpenBSD 4.5, OpenBSD 4.4 shipped it.
Silicon Laboratories CP2101/CP2102 based USB serial adapter